Cloning of CAT genes in Satsuma mandarin and their expression characteristics in response to environmental stress and arbuscular mycorrhizal fungi.

CitCAT1 and CitCAT2 were cloned and highly expressed in mature leaves. High temperatures up-regulated CitCAT1 expression, while low temperatures and Diversispora versiformis up-regulated CitCAT2 expression, maintaining a low oxidative damage. Catalase (CAT), a tetrameric heme-containing enzyme, removes hydrogen peroxide (HO) to maintain low oxidative damage in plants exposed to environmental stress.

Symbiotic Fungi Alter the Acquisition of Phosphorus in through Regulating Root Architecture, Plant Phosphate Transporter Gene Expressions and Soil Phosphatase Activities.

Plant roots can be colonized by many symbiotic fungi, whereas it is unclear whether and how symbiotic fungi including arbuscular mycorrhizal fungi and endophytic fungi promote phosphorus (P) uptake in plants. The objective of the present study was to analyze the effect of inoculation with a culturable endophytic fungus (), three arbuscular mycorrhizal fungi (, , and ), and mixture of . , .